body {
    font-family: Arial, sans-serif;
    display: flex;
    margin: 0;
    height: 100vh;
}
#sidebar {
    background-color: #003366;
    color: white;
    padding: 15px;
    width: 200px;
    height: 100%;
    display: flex;
    flex-direction: column;
}
#sidebar img {
    max-width: 100%;
    margin-bottom: 20px;
}
#sidebar a {
    color: white;
    text-decoration: none;
    padding: 10px;
    border-radius: 5px;
    margin: 5px 0;
    transition: background-color 0.3s;
}
#sidebar a:hover {
    background-color: #0056b3;
}
#content {
    flex-grow: 1;
    padding: 20px;
}
.data-box {
    border: 1px solid #ddd;
    border-radius: 4px;
    padding: 20px;
    margin-bottom: 20px;
    text-align: center;
}